Paper-cutting machine.



No. 707,294. Patented Aug. l9, I902. G. D.v BLAGKHALL. PAPER CUTTING MACHINE.

(Application flked Nov. 22, 1901.)

(No Model.)

isuw L. I v V W7LU67ZZU)" UNITED STATES? CHARLES 1); BLAOK'HA L,

[PATENT OFFICE;

or BUFFALO, New YORK.

'PA'PER-cur'rme VMAVCHIN E.

sPEGIFIoATmN forming part of Letters Patent No. 707,294,dated August 19, 1902.

l Application filed November 22,1901. Serial 110-83353. (N model.) i

To all whom it may concern:

Be it known that LGHARLES D. BLAOKHALL, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Paper-Cutting Machiues,:of which the following is a specification;

This inventionrelates to the wooden cut-;

ting-sticks employedon the tables of papercutting machinesfor protecting" the edge of the reciprocating knife. 'Theknife is usually i to present a second set of fresh surfaces to oifset with reference to the longitudinal center-turn from time to time for bringingra fresh surface opposite'the knife and also reversed end for end after an objectionable slit has been cut in each of its four sides, so as the knife, thus permitting the stick-to' be 0perated upon by the knife at two places-0n each of its faces before requiring the stick to be discarded. I

The object of my invention isto so construct the cutting-stick and the socket which receives it that the shifting or adjusting ca-' pacity of the stick is increased, thus enabling a larger area of its surfaceto be utilized and lengthening its life accordingly.

a differentjposition 0f the cutting-stick. Fig.1

In the accompanying drawings Figurel is a vertical longitudinal section of the upper portion of a paper-cutting machine containing my invention. Fig.2 is a similar view of the central portion of themachine, showing 3 is a perspective'view of the cutting-stick, showing the location of the slits after the stick has been turned'and reversed'intheon dinary manner. Fig. 4.is a' similar view of the stick after having been shifted as well as turned and reversed. Figs. 5, 6, 7, 8, and 9 are Vertical sections similarto Fig. 2, showing modified forms of m'y-invention.

Like letters of reference referto like parts in the several figures.v 1 A indicates the table of the'machin'e, and

B the knife or cutter-blade. The knife is carried by the usual reciprocating cro'ss head O, which slides in vertical guides in the cu sbe shifted bodily sidewise in the socket for bringingdifierent portions of itsupper surface opposite the knife. pied by the stick isfilled by a removable fill ing or strip G of the proper thickness to fit snugly therein and of -the required width or depth to be flush with the surfaceiof thetable; Upon removing this filling-strip the cut;' ting-stick can be slid laterallyagainst either wall of its socket, and after shifting the stick the filling-strip is replaced between the oppositewall of thesocket and the stick. Figs. 1 and 2 show the stick in these two positions.

1 By this coust-ructionthe cutting-stick can be turned and reversed like the ordinary stick.

without changing the-position of the fillingstripG, and after the stick has passed through the ordinary cycle of positions it can also be shifted sidewise in either direction in each of ditional portions of the surface of each side ting the stick to receivefQur slits on each side'or sixteen in all before becoming unserviceable. The ordinary stick must be renewed after having each side slitted in two places vprovement shown in Figs. 1 and 2-the life of the stick is thus doubled. ,In-order to accomplish this result, the'stick must be wider knife B and either wall of the stick-groove F. If desired, two ormore of such filling-strips :may be used, as shown a't G in Figs. 5, 6, and

7, where two stripsare employed. ,In this case both strips maybe placed either at the right or the left hand side of the stick, as seen in Figs. 5 and 6, or at opposite sides of the same, as shown in Fig. 7. By this modified shown in Figs. '1 and 2, so that the stick can its four main positions,-thus enabling two adto be brought opposite the knife and permitor eight in all, and by the form of my imthan the distance between the edge of the.

The space not occuconstruction the number of lateral shifts or adjustments of the stick in each of its four main positions is correspondingly multiplied.

My improvement may be applied to existing paper-cutting machines having the usual square stick socket by making the stick smaller than the socket in both cross-sectional dimensions, as shown in Fig. 8, and employing a supplemental filling-strip G between the bottom of the socket and the stick in addition to the filling-strip G inserted between one' side of the stick and the opposing wall of the socket.

In lieu of a filling-strip any other suitable devicemay be employed for holding the cutting-stick against lateral displacement in its socket. For instance, a set-screw G may be used, as shown in Fig. 9, in which case the socket is provided in both of its vertical walls ting-stick seated in the groove and made narrower than the same, but Wider than the distance between the edge of the knife and either wall of the groove, whereby when seated at either side of said groove it will oppose the knife, and a retaining device for holding the cutting-stick against lateral displacement,

substantially as set forth.

2. The combination with the table of a paper-cutting machine provided with a groove, of a laterally-adjustable cutting-stick seated in said groove and made narrower than the same, a knife arranged over said groove and located at a shorter distance from both Walls of the groove than the width of thecuttingstick, whereby Whenseated at either side of 

